高超声速稀薄流中横向喷流干扰特性实验研究

卓越; 罗凯; 尚甲豪; 于庆豪; 汪球; 王业军; 梁金虎; 赵伟

doi:10.6052/0459-1879-22-599

高超声速稀薄流中横向喷流干扰特性实验研究

doi: 10.6052/0459-1879-22-599

卓越^{*, †},
罗凯^†,
尚甲豪^{†, **},
于庆豪^{*, †},
汪球^†,
王业军^†, ,,
梁金虎^*,
赵伟^{†, **}

*.
中北大学环境与安全工程学院, 太原 030051
†.
中国科学院力学研究所高温气体动力学国家重点实验室, 北京 100190
**.
中国科学院大学工程科学学院, 北京 100049

基金项目: 国家自然科学基金(12072353, 12272386)和中国科学院青年创新促进会(2021020)资助项目

详细信息

通讯作者:
王业军, 副研究员, 主要研究方向为高超声速流动与激光测试技术. E-mail: wangyejun@imech.ac.cn

中图分类号: V211.751
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- 被引次数: 0
出版历程
- 收稿日期: 2022-12-22
- 录用日期: 2023-02-03
- 网络出版日期: 2023-02-04
- 刊出日期: 2023-05-18

EXPERIMENTAL STUDY ON THE CHARACTERIZATION OF TRANSVERSE JET INTERACTION IN HYPERSONIC RAREFIED FLOW

Zhuo Yue^{*, †},
Luo Kai^†,
Shang Jiahao^{†, **},
Yu Qinghao^{*, †},
Wang Qiu^†,
Wang Yejun^{†
, ,},
Liang Jinhu^*,
Zhao Wei^{†, **}

*.
School of Environment and Safety Engineering, North University of China, Taiyuan 030051, China
†.
State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
**.
School of Engineer Science, University of Chinese Academy of Science, Beijing 100049, China

摘要

摘要: 喷流干扰是高超声速飞行高精度控制的一种有效手段, 研究者们以往大部分都主要集中于连续流条件下喷流干扰效应的机理研究, 并给出了喷流干扰流场的典型结构, 而稀薄流条件下喷流干扰特性的实验数据还十分匮乏. 本文利用JFX爆轰激波风洞产生高超声速稀薄自由流, 基于平板模型开展不同喷流压力和自由来流参数对横向喷流干扰特性影响的实验研究, 采用高速纹影成像及图像处理技术, 获得稀薄流条件下喷流干扰流场演化过程及流场结构的变化规律. 相比于无喷流条件形成的流场, 横向喷流与稀薄自由流相互作用形成的流场结构更为复杂, 喷流压力由于受到稀薄来流的扰动, 斜激波会短暂穿透喷流干扰流场并延伸至楔形体上部. 喷流干扰流场内桶状激波的影响范围随着喷流压力的升高而逐渐变宽, 位于三波点上游的斜激波空间位置不会随喷流压力的变化而改变, 而位于三波点下游的弓形激波则向上游移动, 当喷流压力过低时, 桶状激波不会与其他两种激波交汇形成三波点. 高超声速稀薄来流压力的降低同样会使桶状激波的影响范围变宽, 弓形激波同样也会向上游移动, 但基本不会对斜激波空间位置产生任何影响.
- 横向喷流干扰 /
- 高超声速流动 /
- 稀薄来流 /
- 激波风洞
Abstract: Jet interaction is an effective approach for hypersonic flight controls with higher agility and improved maneuverability. Previous researches are mainly focused on the mechanisms of jet interaction effects in continuous region, classical flowfield structures of jet interaction based on different models have been proposed theoretically, on the other hand, scarce experimental data on characterizations of jet interaction in rarefied region exist. Therefore, the objective of this work aims to experimentally investigate the effects of jet pressure and hypersonic rarefied flow condition on the characterizations of transverse jet interaction based on a flat plate model, whereas hypersonic rarefied flows are generated in a JFX detonation shock tunnel. Evolution and typical structure of transverse jet interaction in hypersonic rarefied flow are recorded using high-speed schlieren imaging approach, and variations of spatial positions of different shock waves are analyzed using imaging process technique. Compared to the flowfield without the presence of jet flow, the interaction between jet flow and hypersonic rarefied flow makes the flowfield much more complex. Oblique shock could instantaneously penetrate through the flowfield of jet interaction due to the pressure fluctuation of jet flow caused by the incoming flow. With increasing the jet pressure, the affecting region of the barrel shock gradually becomes broader. The spatial position of the oblique shock wave in the upstream of the triple point barely changes with an increase in the jet pressure, while in the downstream of the triple point, the bow shock moves upstream with increasing pressure. The spatial position of the barrel shock would not overlap with the other two when the jet pressure is low. The pressure reduction of the incoming hypersonic rarefied flow can broaden the affecting region of the barrel shock and thus move the bow shock upstream as well, but it has little influence on the spatial position of the oblique shock wave.
- transverse jet interaction /
- hypersonic flow /
- rarefied flow /
- shock tunnel

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图 1 JFX激波风洞结构示意图

Figure 1. Schematic of JFX shock tunnel structure

下载: 全尺寸图片幻灯片

图 2 喷管出口处皮托压力曲线

Figure 2. Pitot pressure curve at nozzle exit

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图 3 平板模型结构示意图

Figure 3. Schematic of the flat panel model

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图 4 喷流及皮托压力变化曲线

Figure 4. Pressure curves of jet and Pitot

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图 5 反射式纹影成像示意图

Figure 5. Schematic of reflective schlieren imaging

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图 6 喷流干扰流场的(a)演化过程及(b)典型结构

Figure 6. (a) Evolution and (b) typical structure of transverse jet interaction flowfield

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图 7 不同高度条件下喷流干扰流场图像强度随时间变化过程

Figure 7. Time-varying intensity of transverse jet interaction flowfield at different heights

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图 8 喷流干扰流场在y = 2.35 mm处的(a)强度曲线、(b)极值曲线以及(c)桶状激波水平位置随时间的变化曲线

Figure 8. Curves of (a) intensity, (b) absolute extremum and (c) time-varying horizontal position of barrel shock of transverse jet interaction flowfield at a height of 2.35 mm

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图 9 计算获得的流场激波空间位置与纹影图像对比

Figure 9. Comparison of calculated spatial positions of shock waves with schlieren imaging

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图 10 有无喷流条件下喷流干扰流场结构纹影图

Figure 10. Schlieren images of flowfield structures without and with jet

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图 11 有无喷流条件下流场强度随时间变化过程

Figure 11. Time-varying intensity of flowfield at different heights without and with jet

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图 12 有无喷流条件下流场内激波空间位置曲线

Figure 12. Spatial position curves of shock waves of flowfield without and with jet

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图 13 不同喷流压力条件下喷流干扰流场内激波空间位置曲线

Figure 13. Spatial position curves of shock waves of transverse jet interaction flowfield with different jet pressures

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图 14 楔形体表面压力变化曲线

Figure 14. Variation of surface pressure of the wedge model

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图 15 不同来流条件下喷流干扰流场结构

Figure 15. Schlieren images of transverse jet interaction flowfield under different freestream conditions

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图 16 不同来流工况下喷流干扰流场强度随时间变化过程

Figure 16. Time-varying intensity of transverse jet interaction flowfield with different heights under various freestream condition

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图 17 不同来流条件下喷流干扰流场内激波空间位置曲线

Figure 17. Spatial position curves of shock waves of transverse jet interaction flowfield under different freestream conditions

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表 1 实验采用的三种工况气流参数

Table 1. Parameters for three operational cases in experiments

	P₁/ MPa	T₀/ K	P₀/ MPa	P_∞/ Pa	T_∞/ K	V_∞ / (m·s⁻¹)	ρ_∞ / (kg·m⁻³)	Ma	Kn
Case1	0.5	2883	3.21	403	509	3228	2.16×10⁻³	6.44	0.0003
Case2	0.1	2711	0.61	80	451	3117	4.78×10⁻⁴	6.52	0.0014
Case3	0.05	2637	0.30	42	421	3041	2.63×10⁻⁴	6.54	0.0025

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